Overlapped block motion compensation

Systems and techniques for overlapped block motion compensation (OBMC) are provided. The method may include: determining to enable an OBMC mode for a current sub-block of video data; determining whether a first condition, a second condition and a third condition are satisfied for an adjacent sub-block adjacent to the current sub-block, the first condition including that all the reference picture lists for predicting the current sub-block are used for predicting the adjacent sub-block; the second condition comprises that the same reference picture is used for determining motion vectors associated with the current sub-block and the adjacent sub-block, and the third condition comprises that the difference between the motion vectors of the current sub-block and the adjacent sub-block does not exceed a threshold value; and determining that the motion information of the adjacent sub-block is not used for motion compensation of the current sub-block based on determining that the OBMC mode is enabled and the first co